What part of “Nature is man’s inorganic body – nature, that is, insofar as it is not itself human body. Man lives on nature – means that nature is his body, with which he must remain in continuous interchange if he is not to die. That man’s physical and spiritual life is linked to nature means simply that nature is linked to itself, for man is a part of nature.” Do these people not understand?

I’m not even a practicing vegan, but I understand how animal liberation exists as a link in the chain of all human activity that impacts nature.